Swimline 18' Round Above Ground Pool Cover + 4x8 Air Pillow + Winter Closing Kit Pool Size: Fits 18' Round Pools U.V. Inhibitors Protect the Cover From Sun Damage 4 Foot Overlap (cover size is 4 ft larger than pool size) Highly resistant to punctures, tears, chlorine stains and other chemical stains Color: Silver Top/Black Underside